The book "Radionuclide Marking Methods in Population Ecology of Mammals", written by the authors of B.. N. A and A.. In. Bazhenov, is a unique work that immerses the reader in the world of modern environmental studies. This publication will be a real find for specialists in the field of ecology, biology, as well as students and graduate students interested in methods of studying mammalian populations. The authors, with extensive experience in the field of ecology and radiobiology, offer readers a detailed analysis of radium marking methods that allow you to track the migration and behavior of animals in their natural habitat. The book begins with an introduction to the basics of radionuclide technology, explaining how and why these methods are becoming increasingly relevant in research practice. The reader will learn about the principles of radionuclide labels, their advantages and disadvantages, as well as how to correctly interpret the data obtained. The topics raised in the book cover a wide range of issues related to population dynamics, ecosystem interactions, and mammalian adaptation to changing environmental conditions. The authors emphasize the importance of understanding these processes for biodiversity conservation and sustainable management of natural resources. The book is not only informative, but also relevant in light of contemporary environmental challenges such as climate change and human impact on nature. “Radionuclide Marking Methods in Mammalian Population Ecology” will be of interest not only to professional ecologists, but also nature lovers, students and anyone who wants to understand more deeply how scientific methods can help protect the environment. Readers interested in topics such as ecology, zoology, conservation, and radiobiology will find this book a wealth of useful information and practical recommendations. The style of the authors is distinguished by scientific rigor, but at the same time they try to make the material available to a wide audience. In. N. Bolshakov and A. In. Bazhenov are well-known specialists in their field, and their previous work has already established itself as a significant contribution to science. Their experience and knowledge make this book not only a textbook, but also a real reference for practicing environmentalists. The book also includes many illustrations, graphs and tables that clearly demonstrate the results of research and help the reader to better understand complex concepts. This makes the material more exciting and accessible, which is especially important for those who are just starting their way into ecology. In conclusion, “Radionuclide Marking Methods in Mammalian Population Ecology” is not just a book, but a whole encyclopedia of knowledge about how modern technologies can be used to study and preserve nature. It inspires further research and opens new horizons in understanding ecosystems. If you want to learn more about how mammals interact with the environment and how we can use scientific methods to protect them, this publication will be your reliable companion in the world of ecology.